Don't know all the specifics because I was late checking twitter as well, but sounds like a VT fan(or fans) were talking smack to Corwin Cutler and Nnadi didn't like it. After all they were HS teammates so I'm sure they're friends. I saw JC Coleman tweeted Nnadi to not be bothered by it so hopefully that's enough damage control.
Later when Reavis tweeted about VT campus food, Nnadi added "the food is real out there" which is a good sign even if it seems like a small thing. I remember Jalyn Holmes literally could not say one positive thing about VT on twitter when he started to sway away from us, so the fact Nnadi still will admit positive things about VT is encouraging to me.
Fans need to avoid negative tweets. It really turns people (and more importantly, recruits) off.